31143424113 has 6 divisors (see below), whose sum is σ = 44984945954. Its totient is φ = 20762282736.

The previous prime is 31143424061. The next prime is 31143424121. The reversal of 31143424113 is 31142434113.

31143424113 is a `hidden beast` number, since 311 + 4 + 342 + 4 + 1 + 1 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 24726933504 + 6416490609 = 157248^2 + 80103^2 .

It is not a de Polignac number, because 31143424113 - 2⁹ = 31143423601 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31143424513) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1730190220 + ... + 1730190237.

Almost surely, 2^31143424113 is an apocalyptic number.

It is an amenable number.

31143424113 is a deficient number, since it is larger than the sum of its proper divisors (13841521841).

31143424113 is a wasteful number, since it uses less digits than its factorization.

31143424113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3460380463 (or 3460380460 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

Adding to 31143424113 its reverse (31142434113), we get a palindrome (62285858226).

The spelling of 31143424113 in words is "thirty-one billion, one hundred forty-three million, four hundred twenty-four thousand, one hundred thirteen".